JPH044396Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an electric cooker used as a hot plate or the like.

(Prior Art) In this type of electric cooker, there have conventionally been a variety of types in which a sheathed heater is cast into a heating plate made of aluminum alloy or the like as a heating plate for heating a cooking plate.

(Problem to be solved by the invention) As mentioned above, in the case of the type in which the sheathed heater is cast into the hot platen, it is important to cast the sheathed heater in the hot platen so that it is uniformly distributed from the point of view of casting technology. extremely difficult. Therefore, the embedded location of the sheathed heater in the heating plate is limited to a specific position, and the heating temperature distribution of the heating plate is inevitably uneven, resulting in uneven cooking depending on the position on the cooking plate. There is a problem.

This invention was made in view of the above points,
The purpose is to make the heating temperature distribution on the heating plate substantially uniform, and to improve the adhesion between the heating plate and the cooking plate, so as to effectively utilize the entire surface of the cooking plate.

(Means for Solving the Problems) In the present invention, as a means for solving the above problems, as shown in the drawings, the cooking plate 2 is attached to and detached from the heating plate 3 disposed inside the main body case 5. In the electric cooking device, the heating plate 3 is arranged on an electric insulating plate 11 made of mica or the like, and conductive wires 12 are disposed substantially uniformly on the surface, and the heating plate 3 is placed on the cooking plate. It is composed of a surface heater 4 having a size that can come into contact with substantially the entire bottom surface of the surface heater 2, and protection plates 13 and 14 made of a good thermal conductor that sandwich the top and bottom of the surface heater 4. , a connecting tool 7 configured to connect the cooking plate 2 and the main body case 5 is provided on the peripheral edge of the cooking plate 2 while contacting the inner peripheral surface of the main body case 5; 7
A lock lever 8 is provided which is engaged with a claw portion 9 formed on the peripheral edge of the main body case 5 in order to press the cooking plate 2 into contact with the heating plate 3.

(Function) In the present invention, the following effects can be obtained by the above means.

That is, the heating element in the heating plate 3 is formed by disposing conductive wires 12 substantially uniformly on the electrically insulating board 11 made of mica or the like, and has a size that allows it to come into contact with substantially the entire bottom surface of the cooking plate 2. surface heater 4 with
With this configuration, the heating temperature distribution on the heating plate 3 and the cooking plate 2 becomes substantially uniform, and uneven cooking on the cooking plate 2 can be effectively prevented.

In addition, an upper protection plate 13 that covers the upper part of the surface heater 4 is provided.
By bringing the outer periphery of the main body case 5 into contact with the inner circumferential surface of the main body case 5, it is possible to prevent food items from falling to the inner bottom of the main body case 5 and to facilitate cleaning of the main body case 5.

Furthermore, a connecting tool 7 provided on the peripheral edge of the cooking plate 2 is engaged with a claw portion 9 formed on the peripheral edge of the main body case 5 so as to press the cooking plate 2 into contact with the heating plate 3. By providing the lock lever 8, it is possible to improve the adhesion between the cooking plate 2 and the heating plate 3, to prevent the cooking plate 2 from wobbling, and to prevent foreign matter from entering between the cooking plate 2 and the heating plate 3.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The electric cooker of this embodiment is of a separable type in which a main body 1 provided with a heating plate 3 and a cooking plate 2 placed on the heating plate 3 can be separated.

The main body 1 consists of a dish-shaped main case 5 and a heating plate 3 installed in the center of the main case 5.

A handle 6 for attaching and detaching the cooking plate 2 is provided at opposing positions on the peripheral edge of the cooking plate 2. The handle 6 is attached to a connector 7 fixed to the periphery of the cooking plate 2, and a claw portion 9 formed on the periphery of the main body case 5 is attached to the intermediate portion of the connector 7. A lock lever 8 that can be freely engaged and detached is vertically provided.
The lock lever 8 has a spring 1 interposed between the rear part of the connector 7 and the handle 6.
It is biased in the locking direction by a biasing force of 0. Note that the lock by the lock lever 8 can be released by lifting the rear part of the connector 7.

The heating plate 3 is a surface heater 4 which is formed by disposing conductive wires 12 substantially uniformly on the surface of an electrically insulating plate 11 made of mica or the like, and has a size that allows it to come into contact with substantially the entire bottom surface of the cooking plate 2. (See Figure 2)
and protective plates 13 and 14 made of a good thermal conductor that sandwich the top and bottom of the surface heater 4, and the upper protective plate 13 has its outer periphery in contact with the inner peripheral surface of the main body case 5. With the main body case 5
It is supported via a support 15 on the bottom surface of. Furthermore, on the peripheral edge of the upper protection plate 13,
As shown in an enlarged view in FIG. 3, a large number of cut and raised convex portions 16 each having an inverted U-shaped cross section are formed. The cut-and-raised convex portion 16 is biased to lift the central portion of the heating plate 3 upward due to residual stress at the time of formation, and to increase the degree of adhesion to the bottom surface of the cooking plate 2 placed on the heating plate 3. Act as a means.

In the drawing, reference numeral 17 is a screw that connects the upper and lower protection plates 13 and 14, 18 is a lid that covers the top of the cooking plate 2, and 19 is a support leg for placing the main body 1 on a table or the like.

With the above configuration, the heating plate 3 is
The entire surface is heated almost uniformly by the heat generated from the surface heater 4 constituting the heating element, and the heating temperature distribution of the cooking plate 2 placed on the heating plate 3 also becomes uniform. Therefore, the occurrence of uneven cooking on the cooking plate 2 can be effectively prevented.

In addition, an upper protection plate 13 that covers the upper part of the surface heater 4 is provided.
By bringing the outer periphery of the main body case 5 into contact with the inner circumferential surface of the main body case 5, it is possible to prevent food items from falling to the inner bottom of the main body case 5 and to facilitate cleaning of the main body case 5.

Furthermore, a connecting tool 7 provided on the peripheral edge of the cooking plate 2 is engaged with a claw portion 9 formed on the peripheral edge of the main body case 5 so as to press the cooking plate 2 into contact with the heating plate 3. By providing the lock lever 8, it is possible to improve the adhesion between the cooking plate 2 and the heating plate 3, to prevent the cooking plate 2 from wobbling, and to prevent foreign matter from entering between the cooking plate 2 and the heating plate 3.

It goes without saying that the present invention is not limited to the configuration of the above-described embodiments, and that the design can be modified as appropriate without departing from the gist of the invention.

(Effects of the invention) As described above, according to the invention, in the electric cooker configured such that the cooking plate 2 is removably placed on the heating plate 3 disposed inside the main body case 5, The heating plate 3 is a surface heater having a conductive wire 12 disposed substantially uniformly on the surface of an electrically insulating plate 11 made of mica or the like, and having a size capable of contacting substantially the entire bottom surface of the cooking plate 2. 4 and protective plates 13 and 14 made of a good thermal conductor that sandwich the top and bottom of the surface heater 4, so that the heating temperature of the heating plate 3 and the cooking plate 2 placed on the heating plate 3 can be reduced. The distribution becomes uniform, and there is a practical effect that uneven cooking on the cooking plate 2 can be effectively prevented.

Additionally, an upper protection plate 13 that covers the upper part of the surface heater 4 is provided.
Since the outer periphery of the main body case 5 is brought into contact with the inner circumferential surface of the main body case 5, it is possible to prevent the food to be cooked from falling to the inner bottom of the main body case 5, and the maintenance work of the main body case 5 is also facilitated. effective.

Furthermore, a connecting tool 7 provided on the peripheral edge of the cooking plate 2 is engaged with a claw portion 9 formed on the peripheral edge of the main body case 5 so as to press the cooking plate 2 into contact with the heating plate 3. Since the lock lever 8 is provided, the adhesion between the cooking plate 2 and the heating plate 3 is improved and heat transfer is improved, and wobbling of the cooking plate 2 can be prevented. This has the effect of preventing foreign matter from entering between the cooking plate 2 and the heating plate 3, since the locking lever 8 cannot lock the cooking plate 2 and the heating plate 3 if foreign matter enters between them.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a main part of an electric cooker according to an embodiment of the present invention, FIG. 2 is a plan view of a surface heater in the electric cooker shown in FIG. 1, and FIG. 3 is an electric cooker shown in FIG. It is an enlarged view of part A in the cooker. 2...Cooking plate, 3...Heating plate, 4...Surface heater, 5...Main case, 7...Connector, 8...
... Lock lever, 9 ... Claw part, 11 ... Electrical insulation board, 12 ... Conductive wire, 13 ... Upper protection plate, 14
...Lower protection plate.

Claims (1)

[Scope of utility model registration request] In an electric cooker configured such that a cooking plate 2 is removably placed on a heating plate 3 disposed inside a main body case 5, the heating plate 3 is electrically conductive to an electrically insulating plate 11 made of mica or the like. It consists of a surface heater 4 in which the wires 12 are arranged substantially uniformly on the surface and has a size that allows it to come into contact with substantially the entire bottom surface of the cooking plate 2, and a heat conductor that holds the surface heater 4 above and below. The outer circumference of the upper protection plate 13 is in contact with the inner circumferential surface of the main body case 5, while the outer circumference of the upper protection plate 13 is in contact with the inner circumferential surface of the main body case 5. A connecting tool 7 configured to connect the cooking plate 2 to the heating plate 3 is provided, and the connecting tool 7 is provided with a hook 9 formed on the periphery of the main case 5 to connect the cooking plate 2 to the heating plate 3. An electric cooking appliance characterized by being provided with a lock lever 8 that is engaged to be pressed into contact with each other.